Photographic-printing apparatus



W. C. HUEBNER.

PHOTOGRAPHIC PRINTING APPARATUS.

APPLICATION FILED MAR. 12. 1920.

Patented Apr. 25, 1922.

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f/VTO FTTOH/VEKS W. C. HUEBNER. PHOTOGRAPHIC PRINTKNG APPARATUS.

APPLICATION FILED MAR. 12, I920.-

Patented Apr. 25, 1922.

TSHEETS-SHEET 2.

W. C. HUEBNER.

PHOTOGRAPHIC PRINTING APPARATUS.

APPLICATION FILED MAR. 1 2. I920.

Patentd Apr. 25, 1922.

7 SHEETS-SHEET 3.

w. c; HUEBNER. PHOTOGRAPHIC PRINTING APPARATUS.

APPLICATION FILED MAR. 12,1920.

1,414,280. Pamnted Apr. 25, 1922.

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arrow/5 r's W. C. HUEBNER.

PHOTOGRAPHIC PRINTING APPARATUS.

APPLICATION El LED MAR. 12, 1920.

Patented Apr. 25', 1922.

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3y My 2% HTTOR/VEYJ W C. HUEBNER.

PHOTOGRAPHIC PRINTING APPARATUS.

APPLICATION FILED MAR-12,1920.

Patented Apr. '25, 19225 JIIIII v www W. C. HUEBNER.

PHOTOGHAPHIG PRINTING APPARATUS.

APPLICATION FILED MAR-121 I920.

Patented A r; 25, 1922.

1 SHEETS-SHEET 7.

11mm fisr res- PATENT OFFICE.

WILLIAM c. or BUFFALO, NEW YORK, Assicmon T HUEBNER. BLEISTEIN ,rn'm'mrscomrnmr, or BUFFALO, new YORK. 4

I To all'whmnz't may con'cerni Be it known that I, WILLIAM C. Hosanna;character wherelnthe printing and sensification.

a citizen of the United States, residing at Bu'fialminthe county of Erieand State of New York, have invented a new and useful Improvement inPhotographic-Printing Apparatus, of which the following is a speci- Thisinvention relates more'partic'ularly to improvements in photographicprinting or composing apparatus of the general natureheretofore'invented, by me. These apparatus are intended forphotographing any desired number of like or difi'erent'original printsin anyrequired predetermined an registered position and relativearrangement directly upon the sensitized surfaces of press plates whichmay be afterwards suitably finished and'used 1n mechanical printingpresses for printing in one or more colors. These apacting means foreffecting an accurate, relaparatus are adaptedfor various purposes, suchfor instance-as repeating prints from the same, transparent printingplate or negative in a requlred arrangement on a single sensitized pressplate, which after development, is vused for mechanically printing aplurality of impressions; for composing 7 -work Where it is desired toplace different subjectsin a predetermined arrangement on I negative orpositive printing plate the press plate; and for making press plates formulticolor printing where it is necessary to photograph pri'ntsin exact.re ister on the different sensitizedpress plates t at areused inpresses for printing the different colors. Such "apparatus ordinarilycomprise a support for the sensitized press plate; a sup; port forholding a transparent photo raphic 5iereinafter called the printingplate) in contact with the sensitized surface of thepress plate, apressure device orback support for causing an intimate, uniform contactof the 'sensi-. ti'zed surface with the printing plate; means forcausing light to act throug'lfi the printing plate for photographing the'f print on the sensitized surface; and adjustingmeans' for producing arelative movement between'the sensitized and printing plates parallelwith the sensitized. surface to enable rints to bemade in desiredpredetermined ocations on the sensitized plate and for producing arelative movementbetween the sensitized and ne object of this inventionis to provide rnoroemrmc-rnm'rine nrrana'rns.

Spe'ciflcation ot Letters Patent. Patented APL'25, 1922 f Applicationfiled Karen 12', 1920. serial No. 365,244.

a simple and inexpensive apparatus of this facing upwardly and closed toplace the plates in contact face to face. In the open i printing plateand the sensitized metal plate horizontal position-both the sensitizedplate and the transparent printing plate can. be

.quickly and conveniently removed, re laced or adjusted, or otherwisemade ready or exposure, after which the suplports can be quickly foldedinto the vertical position for register adjustment-and for making theexposures.

' j Another object is to provide anovel, quick tive adjustment of theprinting plate,- sensi- "tized surface and pressure-device towardfandfrom each other, and "to determine the for ward position of the surfaceof the printing plate quickly and accurately tofunction as a limit stopand as a clearance device.

of this sort, of novel construction, wherein relative adjustments oftheprinting (plate,-

evice the-sensitizedplate and the pressure can be utilized so that anydesired portion of the sensitized surface can be caused to stand Anotherobject-is to P vide an apparatus opposite the transparent printingplate, or, l

and the printing 'plate and pressure device adjusted to stan oppositethe face and back t-ionary, sensitized surface. IL

the sensitized. plate canjbe held stationary,

respectively of -any desired-portion of' 'the sta-I Another object is toprovide a main and an i I "auxiliary index'; head or. supporting devicefor the printing plate, 'whereb the printing plate can be angularlyadjuste thereon, concentrieally with the main :index heafd,j and bymoving the auxiliary head on the main head the .printing plate can alsobe adjusted to I positions eccentric'with regard to said main head'andturned to any, desired, angular position inv such'eccentric locations,so that locations near the edges" of the sensitized platen ments maybe'ma'de, either when the plate is facing upwardly inf the apparaitvggor smal'lfprintscan'be made in any position'in' on line 11-11, Fig. 9,showing the adjust when in a verticalposition and opposite thesensitized plate, and to improve photographic printing apparatus in theother respects hereinafter described and set forth in the claims.

lln the accompanying drawings:

Fig. 1 is a front elevation of a photographic printing apparatusconstructed in accordance with one embodiment of the in-- vention andshowing the sensitized and printing plates facing upwardly in adjust ingposition.

2 is a similar view thereof, but with the parts ire-printing position.

3 is a fragmentary transverse sectional elevation thereof, on line 3-3,Fig. 2, but with the parts in printing position.

.Fig. i is a plan view of the apparatus with the parts in the sameposition as shown in 1.

Fig. -5 is a transverse vertical sectional View of the adjusting andsupporting devices for the printing plate, on line 5--5, Fig. 4, on anenlarged scale. l ig. 6 is an enlarged side elevation of the pressuredevice for providing a close and uniform contact between the printingand sensitized plates, and with the parts in the position shown in Fig.2.

Fig. 7 is a plan view thereof, partly in section on line 7-7, Fig. 2.

Fig. 8 is a front elevation similar to Fig.

1, of another embodiment of the invention.

Fig. 9 is a plan View thereof. Fig. 10 is a side elevation. thereof, butwith the parts in printing position.

Fig. 11 is a longitudinal vertical section ing and supporting devicesfor the printing plate.

Fig.12 is a vertical sectional the pressure device.

Briefly stated, the photographic printing apparatus, of which twodifferent constructions embodying the invention are shown in thedrawings and hereinafter described, comprises a frame pivoted to swingvertielevation of cally on an upright support, and hinged at one end. tothe adjacent end of a second frame which is pivoted to swing verticallyon a support that is movable relatively to the first support, so thatthe two frames are adapted to be swung'like the leaves of a book, froman open position in which they extend horizontally end to end, to aclosed position in which the frames stand vertically face to face.

One of the frames carries thetransparent printing plate with its holder,registering and adjusting means, and. the other frame carries thesensitized plate with its holder. When the frames are open both of theplates are exposed horizontally face uppermost, and are readilyaccessible for adjusting and changing them.

Means are provided for swinging one of the frames to and from thevertical-positions, and as the other frame is hinged thereto and pivotedon a movable support this frame will also swing on its pivot and at thesame time will approach and contact with the first frame in verticalplane and they are then. l ed together by suitable means. This placesthe printing and sensi-. tized plates into 0; "ve relations facing eachother the are into close contact for printing by a suitable pressuredevice. Means are also provided for moving one of the plates toclearance position a short distance from the other plate to permitrelative adjustment of the plates in planes parallel to the sensitizedsurface for making prints on different portions of the sensitized plate.

In the construction shown in Figs. 1-7, the printing plate, and'pressuredevice are adapted "to be adjusted in directions at right angles to eachother to place them opposite different, desired portions of thesensitized plate, whereas in the other construction shown in Figs. 8-12,the sensitized plate is adapted to be adjusted in two di rectionsbetween the prin plate and pressure device for this I urp c.

Referring first to *igs. 'l7, A and represent the two swinging framescarrying respectively the transparent printing plate C and thesensitized plate D. The me A is suitably pivoted, as by oppositelilllll'" nions a, to swing vertically on an upright support E,preferably fixed on a horizontal base F, and the frame B is similarlypivoted by trunnions b in an upright support Gr which is movable towardand from the sup-v port E, the support G preferably having rollers garranged to travel in horizontal guide grooves g in the opposite sidesof the base. The adjacent ends of the frames A and B are hinged togetheras hereinafter ex )lained.

he printing plate C is adjustably mounted a 16. The index head has acircular top plate provided with a central opening and peripheral gearteeth 19. It is rotated by a v pinlon' 20 meshing with said teeth and-eslocked. inthe re uired position by a dog 21 which is adapte to be movedinto and out of engagement with the teeth 19 by a screw 22 which isadjustable tangentially relative to the index head to provide a fine,accu rate adjustment thereof. The upper side of the index head isprovided on opposite sides.

of its opening with transverse, parallel guide ribs 23, between which isslidably confined a slide 24' over the'central opening in the indexhead. Theslide 24'is provided with a circular opening 25 having anundercut edge which overhangs a bevelled annular shoulder 26 on anauxiliary rotary index head 27. This auxiliary index head is in the formof an annular'plate, but smaller than the main index head and isprovided with peripheral gear teeth 28 with which a 'jinion 29 isadapted to' mesh for rotating it. he printingplate O is secured on theauxiliary index ead by suitable means, preferably consisting ofa plateholder30,carrying a fixed glass or transparent supporting plate 3.1 onthe face of which the printing plate 0 adjustably secured by holdindevices 32 which engage the bevelled edges of the printing plate and aremovably secured on blocks 33 which hold the glass supporting plate in 4.position. The plate holder 30 is preferably removably and detachablysecured in a predetermined position on the auxiliary head by suitablemean ssuch as locking ins 34 secured in holes in the auxiliary head? F01adjusting the slide 24 in the guides 23 radially relatively to the indexhead, the slide is provided (see Figs. 4 and 5) with a at lateral'extension 35 having a screw-threaded hole through which passes anadjusting screw 36 journalled parallel with the guide 23, on the indexhead 12. The ends of the v adjusting screw are suitably formed for the.

engagement of a crank or the like (not shown) for turning it. A pointeror index 7 markon the extension 35 cooperates with a scale on theindexhead 12 to indicate the adjustment of the slide and'the scale isprefdirections from a zero point on erably graduated to read alike inopposite I the transverse axis of the index head.

The construction above described enables the printing plate C tobeturnedto any: po-

sitionconcentric with the axis of the carrier I 10, by turning the mainindex head 12. The

plate can also be adjusted radiall to any desired distance to eithersideof t e center of the carrier and turned about a center eccentric to theaxis of the carrier 10'and the index head '12 by means of the slide 24and a auxiliary index head. 27. The printing plate can, therefore, beturned to any required angular position in any required. location withreferencetolthe center of the main in dex head, either concentrically oreccentrically thereof. 3 Y

In addition to the above adjustments, the carrier 10 is arranged to beadjusted 'ifi-directions at right angles to each other parali lel withthe sensitized plateforplacing the printing plate opposite different,required portions of the sensitized platel', Any suit-L shaft is alsofront end wit able means for this purpose can be'used. In theconstruction shown, the carrier I 10 is mounted to slide longitudinallyof the apparatus in a carriage 40, which in turn is movable transverselyof the apparatus on the swinging frame A. v

The carriage 40 comprises an open, rectangular frame having side barsprovided with guide ribs 43 on their inner faces which enter grooves inthe sides of the carrier 10, so that'the carrier may slide thereon. The

means preferably provided for moving the "carrier comprise two,-oppositely disposed,

s 51 on theswinging spiral gears 49 in operative relation to the spiralgears 48. The shaft 50 is rotated for'turning the screw shafts 45 toactuate the carrier 10, by a suitable crank or handle ":(not shown),which is adapted o engage a clutch collar 53 or the like on t e frontend of the shaft 50 The front end of the shaft 5O isalso preferablyprovided with a gra duateddisk or scale 54 which cooperates with,a'fixed pointer 55 to indicate the adjiistment of the carrier 10.

' The transverse adjustment of the carriage 40 is attained as follows vA The swinging frame is also an open, rectangular frame, having frontand -rear bars 60 and opposite end bars 61, and these end bars 61 are toslidel The carriage. is adjusted by a transverse .screwtlireaded shaft63 jourrovided with suitable guides 62 on which t e carriage 40 isadapted nalled on the" frame parallel with the shaft 50, and a nut 64 onthe adjacent end bar of the carriage 40 engaging the shaft 63 is adaptedto move along saidshaft 63,when said shaft is rotated. The shaft'isrotated by a crankor the like (not shown), which is adapted to engage aclutch collar or other means'on the front end of the shaft. Thisreferabl provided at its operating with a. pointer 65 on the swinginjustments of thercarria e 40. I

The sensitized plate can be secured on the swinging frame B in anysuitable manner. As "shown, the frame B which is an open, rectangularframe, substantially simi- -lar to the frame A, and comprising front andrear bars 70,and opposite end bars 7 a. gra uated disk 64", co- 5 frameA "for indicating the transverse a i 72, is hinged to the swinging frameA by the shaft 50, which passes through lugs 74.- on the frame B. Agripper bar 75 is secured to one edge ofthe sensitized plate and pins 76at its opposite ends are adapted, according to the size of the plateused, to enter one or another of a series of pairs of holes 77 in thefront and rear bars 7 O of the frame B. The opposite edge of thesensitized plate C is secured to another gripper bar 78 which isprovided at its ends with nuts 80, engaging oppositely-threaded screws81 jour-- nalled on the front and rear bars of the swinging frame B. Thescrews have their outer ends formed for the engagement therewith of asuitable crank (not shown) for turning them, to move the bar 78 awayfrom the bar for drawing the sensitized plate taut. The outer sides ofthe nuts engage parallel guide -members 82,which aid in alinmg orretaining the gripper bar 78 in position.

This invention is not restricted to any particular holding means for thesensitized plate, and means such as shown in my a plication No. 279,492,filed Februa 2 1919, for this purpose can be employe but the sensitizedand printing plate holders are both preferably of such construction thatall parts of the holding means for each plate are disposed back from theplane of the operative surface of such plate, so that the surface of theprinting plate C can have a perfect contact with the sensitized surfaceirrespective of whether either plate may be adjusted so as to projectbeyond the'edges' of the other plate.

In order to move the swinging frames from their horizontal positionshown in Figs. 1 and 4, to the vertical position to place the printingand sensitized surfaces into contact for making the prints, the frontbar 60 of the swinging frame A is preferably provided with a gear sectorwhich is concentric with the axis of the trunnions, and is adapted tomesh with a pinion 96 secured on a shaft 97 which is journalled in thefront of the support E. The outer end of the shaft is provided with ahand wheel 98 or the like for rotating the pinion. If the pinion isrotated counter-clockwise, the sector will cause the right hand end ofthe swinging frame A to swing downwardly and as the other swingingframeD is hinged thereto and is also journalled on the movable support G thisframe will be simultaneously actuated and its left hand end a will movedownwardly with the right hand end of the frame A. At the same time themovable standards G will travel to the left on the base of the apparatusso that the upper surface of the sensitized plate D will be brought intoa vertical plane adjacent the printing surface of the printing plate C.A reverse operation of the hand wheel 98 will return the parts to thehorizontal position. Y The two swinging frames A and B are lockedtogether in their adjacent, vertical positions and the printing andsensitized surfaces permitted to be separated sufiiciently to allowrelative movements therebetween without unlocking the frames, preferablyas follows lin the position of the parts shown in Fig. 2, latches100-011 the swinging frame A are adapted to enter recesses 101 on theadjacent side of the swinging frame B (see Fig. 4), and be locked to theframe B by sliding bolts 101 on the latter frame. The bolts are linkedeccentrically to a rotatable member 105 actuated by a hand lever 106 orthe like. When the latches 100 are in position in the recesses 101, theactuation of the lever 106 will cause the bolts 10 to enter notches inthe latches and lock the frames A and .13 together. In this position theprinting surface will be just in contact with the sensitized surface.The latches 100 are not rigid with the swinging frame A but arepreferably formed on or secured to slides 107 movable in guides 108 onthe frame. A shaft 109 journalled on the frame A is provided witheccentric portions 110 engaging in a ertures in the slides. When,therefore, t e latches are locked to the frame B, the rocking of theshaft 109 in one direction or the other will cause a limited relativemovement of the frames A and B towards or from each other on the hinges50, and suflicient clearance will thus be given between the printing andsensitized plates to permit the necessary adjustmentsof the printingplate B in a plane parallel to its surface for placing it oppositesuccessive, redetermined portions of the sensitized p ate. When theprinting plate C has been properly ppsitioned opposite and in contactwith the sensitized plate D, it is necessary to apply pressure,preferably to the back of the sensitized plate, to ensure an even andclose contact between the printing and sensitized surfaces. A suitableressure device H for this purpose is provi ed, constructedas follows: i

A support 112 for the pressure device is arranged on the under or backside of the swingin' frame Band comprises a pair of longitu inalparallel guide rods 113 (see Figs. 1, 4, 6 and 7), secured at o positeends in sliding brackets 114 and 115. he bracket 114 extends from theend of the frame B and has a sliding connection with the end rail 72thereof and the bracket 115 preferably has a groove 116 adapted to slideon a rib on the other end rail 71 of the frame B. This bracket 115 isrovided with hearing sleeves 117 surrounding the pivot shaft 50 betweenand engaging the bearing brackets 52 of the carriage for the printingtransversely of the apparatus as the print ing plate. Thepressure'device is mounted on a carrier block 118 which is arranged toslide on the rods 113 and is adapted to be adjusted thereonlongitudinally of the a paratus, as follows:

A screw-threaded shaft 119 journalled in the brackets lle and turns in athreaded hole in the carrier 118, and is connected at one end by bevelpinions, 120, 121 with a 1 short shalt 122. Thisshaft is journalled inthe bracket 115 and has a bevel pinion 123 meshing with a bevel pinion124:, which is journalled in the sleeve 117 of the bracket 115 and issplined on the hinge shaft 50. The rotation of this shalt 50 foradjusting the carrier 10 or the printing plate C will, therefore,produce a like longitudinal adjustment or the pressure device on therods 113.. printing plate is adjusted either longitudinally ortransversely the pressure device will be simultaneously andcorrespondingly adjusted. The pressure device H is substantially similarto those previously designed by me, and may be briefly described asfollows: i

The guide block 1118 supports a sliding head 125 movable thereontowardsand from the back of the sensitized plate in guides 126 and is actuatedby a screw-threaded I shalt 127 swivelled in the block 118 and having ahand wheel 128 or the like for rotating it; The outerend of the slidinghead .125

has a split ring or the like 129 adapted to be clamped on a cylindricalstud on rotatable head 130, and another head 131 is radially' adjustableon the head by means ofa screw shaft 132 and suitable guiderods 133. Thehead 131.carries a pressure block 134 or any suitable sort having ayielding pad or. surface, and. which is rotatable on the head 131 as bymeans of a shank on the block clamped in a split ring on the head 131 topermit an lar adjustments thereof. The radial an scribed permit thepressure head to be 10- 'justment .ofthe latter and .allow the use ofcated directly opposite and in the same angu- 'lar position as theprinting plate in any ad it will thus be seen that when the tworotatable adjustments de-' will always contact in the same predeterminedplane and thus prevent the deflection and loosenin or creasing of thesensitized ited initial adjustment perpendicular to the printingsurface. As previously explained the index head 12 has a screw-threadedconnection with an adjusting ring 13. This ring 13 is held from endwisemovement, but is capable of turning in its confining groove in thecarrier 10, so that the index head 12 can be .advanced or retractedbyturning the ring 13in one direction or the other rela-=' tively to theindex head. The ring is normally locked to the index head so as to turntherewith when the latter is rotatably adjusted, as for instance by oneor more set screws carried by the ring 13 (see Fig. 5).

and adapted to engage the threaded flange 1 10i the index head. The ringcan be loo ened and turned to advance or retract the index head andagain locked to the index head by means of a suitable tool applied tothe set screws 1 10. 1 Any other suitable may be used for this purpose.

A suitable illuminating device, such arc lamp 143, mounted one. bracket1 1 1 on the swinging frame A to move therewith provides means forilluminating the prints ing plate C when making an-exposure.

1n the modified form of the apparatus shown, in Figs. 8-12, two swingingframes A B are pivoted to swing vertically on a fixed support and amovable support 151 respectively, and are hinged together as be fore,but in this construction the frame A.- supports the sensitized plate l)which is adjustable in two directions perpendicular to each otherparallel to the sensitized surface, and the frame B supports theprinting plate C, which is rotatably adjustable on the frame by means ofan index head 152.

The swinging frames A B are hinged together at 153 and are swung toadjacent parallel vertical positionsby a gear sector 154 and pinions15'5 arranged and operated as in the first construction. The frames arelocked in their closed, vertical positions by sliding bolts 156 on theframe A, which engage keepers 157 on the frame B. The bolts are actuatedby a lever 158.

' \As shown, the sensltlzed plate D is mount ed ona plate holder 160removably secured on a carrier 161 which is adjustable longiu tudinallyof'the apparatus in a carriage 162, which in turn is adjustabletransversely of the apparatus in the frame A. The carrier 161 and thecarriage 162 both move in planes parallel to the sensitized surface. Formoving the carrier 161, it is provided on opposite sides thereof withnuts 163 having screwthreaded engagement with" opposite screwthreadedshaftslfiet journalled in the carriage 162 and connected by spiral gears165, Figs.

plate. For t is purposemeans are provided for giving the printing plateholder a lim-x 70 its lllli The tilt

she carriage 162 shown, comprises an open rectangular irarne slidahle onguides 7 169 on :iraine id and provided with. N0 engaging a transversescrew ch is journalled the frame A and is rotated by suitable cranlr toradjusting the carriage, andis provided. with a graduated dish forindicating the adjustment,

"essure device shown. comprises a pressure och i723 rotatahl se'cnred onahead 173 which is adjustable radially one second rotatahl head li orrotary adjust- 's shank is arranged ie sensit ed plate axis coincidentwi o the a s oi the ting; plate when in pr orting bar N6 of the frame Ait screw serves to move the shank ii 5 ressing sensitized plate againstthe printing relieving the pressure in this construction the circularden head 1552 is arranged to adjusting 1% which is screwed a threaded,circular opening in a plate 179 on the frame B. The adjnstinp; ring isconfined in a peripheral groove formed partly in a clamping 180 securedloy screws 1811 to the index By loosening these screws lot the index had can he rotatahh in the ring 178 required po .nd there locked lrteningthe screws, by turning; the ad ring 1Y8 relatively to the head WP on thelatter is loose the ring, the index can be advanced or'retracted toadjust the printing plate C toward or from the sensitized plate D. Theadjusting rii 178 is provided with a lever 182 for rotat ng itrelatively to the indea head. llhis levereirtends through a slot 182* inone side of the frame B and is adapted to he secured to hold thering'l'iii stationary lo a setscrew or other device 183. Thisconstruction can he used to move the printing plate toward thesensitized plate to provide clearance between the plates to erinit thedesired adjustments of the sensitirzed plate parallel with theprinting-plate when the frames A B are locked together.

Or, if desired,- the frames A B could he arranged in the hood 184secured between the tine osition on b V swing their pivots n I a" 1printing plate on the frame B to swing therewith, and is used toilluminate the printing their pivots iron positions in whi said printingand sensitised plates see i substantially some direction to prin oositions in Whichthe tes face each ad are adapted to so from the printing 12. in photog the coniaoination a support printing plate, a snppoi plate,a lined standard on W supports is pivoted, a movable standard on whichthe other support is pivoted, said sr ports losing hinged to each otherand adopts for making which said printing 'tieed p s held face upwardsto positions in which printing sensitised plates face each 0 and areadapted to contact, and ioi swinging said supports.

8. in photographic printi the combination or: a support ior a entprinting plate, a support for a plate, a iii-red standard on which onsupports is pivoted to swing vertics ry, a standard on which said othersupport pivoted and which is movable towards and from. id standard, saidsuppo ts go d to each other so that the swi or one or said supports on1ts standard will said inovalole standard to approach said i" standardand said supports swing positions in which said printing and sensi"tized plates are held face upwards to positions which they are iace totaco and 3 the combination of a holder for a transparent plate, a holderfor a sensitized plate,

printing 1 a support on which one of said holders is pivoted, a movablesupport on which the other holder is pivoted, said holders being hingedto each other and adapted to swing on their pivots from positions inwhich said printing and sensitized stantiall v the samedirectlon toprinting positions in which the plates face each other and are adaptedto contact for making prints trom the printing plate, and means forlocking said holders together in said printing position.

.5. In a photographic rinting apparatus, the combination of a hol er fora transparent plates face in sub printing plate, holder for a sensitizedplate, a support'on which one of said holders is pivoted, a movablesupport on which the other holder is pivoted, said holders being hingedto -.;each other and adapted to swing on their pivots from positions inwhich said printing and sensitized plates face in substantially thesame. direction to printing; positions inwhich the plates face eachother and are adapted to contact for making prints from the printingplate, means for locking said holders together in said printingposltion, and means for sep aratln said plates a limited distance topermit re ative adjustments thereof without unlocking said supports.

6, in a photographic printing apparatus,

. the combination of a holder for a printing plate, a holder for asensitized plate, means for supporting said holders, substantiallyhorizontally end to end with'the printing and sensitized plates facingupwardly and for moving said holders to upright positions in which theyface each other and in which ing said holders together when in said upright positions. a

7. in photographic printing apparatus,

the combination of two members arranged to swing vertically fromsubstantially horizontal positions, one of said members adapted tosupport a printing plate and said other member adapted to support asensitized plate, means for swinging said members to upright positionswith said printing plate and said sensitized plate face to face, andmeans-for pressing said plates into firm contact.

8. In a photographic printing apparatus, the combination of two membersarranged to wing vertically from substantially horizontal positions, oneof said members adapt ed to support a printing plate and said othermember adapted to support a sensitized plate, means for swinging saidmembers to upright positions with said printing plate and saidsensitized plate face to face, means for looking said members togetherin said upright positions, and a pressure device for pressing said latesinto firm contact.

9.. n a photographic printing apparatus the combination of two membersarranged to swing vertically from substantially horizontal positions,one of said members adapted to support a printing plate and said othermember adapted to support a sensitized plate, means for swinging saidmembers to upright positions with said printing platev and said.sensitizediplate face to face, means for locking said memberstogether insaid upright positions, a pressure device for pressseparating saidplates for permitting said relative adjustments thereof without unlocking said members. j

10. In a photographic printingapparatus, the combination of two membersarranged to swing vertically from substantially horizontal positions,one of said members adapted to support a printingplate and said othermember adapted to support a sensitized plate, means for swinging saidmembers to. upright positions with said printing plate and sensitizedplate face to face, said printing plate supporting member having meansfor adjusting said plate in directions at right angles to each otherparallel with the surface of said printing plate, and means for pressingsaid plates into firm contact.

11. in a photographic printing apparatus,

O the printing and sensitized plates are adapt-Qupright positions withsaid printing plate ed to contact face to face, and means forlockjusting said printing plate in a direction perpendicular to. itssurface, and means for pressing said plates into firm contact.

12. In a photographic printing apparatus, the combination of two membersarranged to swingvertically from substantially horizon tal positions,one of said members adapted to support a printing plate and said othermember adapted to support a sensitized ,plate,'m,eans for swinging saidmembers to upright positions with said printing plate and saidsensitized plate face to face, said printing plate supporting membercomprising a rotatably adjustable index head, means for securing saidprinting plate thereon, means for adjusting said indexheadlin directionsat right angles to each other parallel with the surfaceofthe printingplate, and means for pressing said plates into firm contact.

the combination of two members arranged ltd Mid

iit

to swing vertically from substantiallyhorizontal positions, one of saidmembers adapted to support a printing plate and said other means forswinging said members to upright positions with said printing plate andsaid sensitized plate face to face, a main index head rotatably mountedon said printing plate supporting member, an auxiliary index head whichis adjustable on the main index ing said plates into firnf contact,means for head to different relations to the axis of said securingrelative adjustments between said printing and sensitized plates, andmeans for mainindex headand on which said printing plate is secured,said a'uxiliary'index head 12 member adapted to support'a sensitizedplate, v

ill

being also rotatably adjustable, whereby said printing plate may berotatably adjusted concentrically or eccentrically relative to the axisof said main index head in a plane parallel to the surface of theprinting plate,

and means for pressing said plates into firm contact.

14. In a photographic printing apparatus, the combinationof twosupports, one for a printing plate and the other for a sensitized plate,a rotatable main index head on one of saidsupports, an auxiliary indexhead which is adjustable radially and also rotatably on said main indexhead, said adjustments being parallel with the surface of the printingplate, means for securing the printing plate on said auxiliary indexhead, means for pressing said plates into contact.

lln a photographic printing apparatus, the combination of two supports,one for a printing plate and the other for a sensitized plate, arotatable main index head on one of said supports, an auxiliary indexhead which is adjustable radially and also rota ably on said main indexhead, said adjustments being parallel with the surface of the printingplat/e, means tor securing the print ing plate on said auxiliary indexhead, means for adjusting the printing plate perpendicular to itssurface, and means for pressing said plates into contact,

16. ln a photographic printing apparatus, the combination of twosupports, one for a printing plate and the other for a sensitized plate,a rotatable main index head on one of said supports, an auxiliary indexhead which is adjustable radially and also rotatably on said main indexhead, said adjustments being parallel with the surface of the printingplate, means for securing the printing plate on said auxiliary indexhead,

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means for adjusting the main index head in directions at an angle toeach other parallel with the sensitized surface, and means for pressingsaid plates into contact.

1 l7. in a photographic printing apparatus, the combination of a fixedbase, a standad rigid thereon, a second standard movable on said basetoward and from the lined standard, a support for a transparent printing plate pivoted on one ot said standards,

a support for asensitized plate pivoted on the other standard, a hingeconnecting said supports, and means on one oil said standards forswinging said supports on their pivots from substantially horizontalpositions in which said printing and sensitized plates are facingupwardly to upright positions in which said printing and sensitizedplates are in contact, means for applying pressure to said contactingsurfaces, and means for illuminating said printing plate for producingan image on said sensitized plate.

18. In a photographic printing apparatus,

the combination of two members, one for a printing plate and the otherfor a sensitized plate, said members being mounted to swing frompositions in which said printing and sensitized plates are held faceupwards to positions to place said printing and sensitized plates faceto face for printing, a pressure device for pressing said plates intofirm contact, and means for moving said printing plate and said pressuredevice relative to said sensitized plate to corresponding predeterminedpositions.

19. In a photographic printing apparatus, the combination of twomembers, one for a printing plate and the other for a sensitized plate,said members being mounted to swing from positions in which saidprinting and sensitized plates are held face upwards to positions toplace said printing and sensitized plates face to face for printing, apressure device for pressing said plates into firm contact, saidprinting plate and said pressure device being operatively connected tomove simultaneously to like predetermined positions relative to saidsensitized plate, and means for moving saidprinting plate and saidpressure device.

20. "in a photographic printing apparatus, the combination of twomembers, one for a printing plate and the other for a sensitized plate,said members being mounted to swing from ositions in which said printingand sensitized plates are held lace upwards to positions to place saidprinting and sensitized plates face to face for print ing, a pressuredevice for pressing said plates into firm contact, said printing plateand said pressure device being operatively connected to movesimultaneously to corresponding predetermined positions parallel to saidsensitized plate in either of the two positions of said swingingmembers, and means for adjusting said printing plate and said pressuredevice.

21. ln a photographic printing apparatus, the combination of twomembers, one for a printing plate and the other for a sensitized plate,said members being mounted to swing from positionsin which said printingand sensitized plates are held face upwards to positions to place saidprinting and sensitized plates taceto face r'or printing, a pressuredevice for pressing said plates into firm contact, said pressure devicebeing mounted on and movablewith one of said members, and means foradjusting said printing plate and said pressure device parallel with andrelative to said sensitized plate.

Witness my hand this 9th day of March, 1920.

f WILLIAM c. HUEBNER.

Witnesses:

W. B. -PRITCI-IARD, M. J. Prruin'.

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